<math>\mathbb \neg X</math> означает "<math>X</math> ложно", так что <math>\mathbb P(\neg X)</math> означает "вероятность, что <math>X</math> ложно".
The Diseasitis involved some more complicated statements than this, though; in particular it involved:
The 90% chance that a patient blackens the tongue depressor, given that they have Diseasitis.
The 30% chance that a patient blackens the tongue depressor, given that they're healthy.
The 3/7 chance that a patient has Diseasitis, given that they blackened the tongue depressor.
Задача про Болезнит включала больше утверждений посложней, например:
